Here's some sauce on this story:
http://www.nydailynews.com/new-york/ny-metro-cops-prostitution-ring-20180912-story.html
>At least seven officers — including three sergeants and two detectives – have been arrested and two detectives have been stripped of their guns and shields after they were taken in for questioning by the Internal Affairs Bureau on Wednesday.
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A second source estimated the number of cops involved could be as many as 20. A high-ranking NYPD source said that the investigation took three years to complete and involved "hundreds of hours of surveillance and multiple (wiretaps)."